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Commit cc5943a7 authored by Tejun Heo's avatar Tejun Heo
Browse files

cgroup: mark "notify_on_release" and "release_agent" cgroup files insane 



The empty cgroup notification mechanism currently implemented in
cgroup is tragically outdated.  Forking and execing userland process
stopped being a viable notification mechanism more than a decade ago.
We're gonna have a saner mechanism.  Let's make it clear that this
abomination is going away.

Mark "notify_on_release" and "release_agent" with CFTYPE_INSANE.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarLi Zefan <lizefan@huawei.com>
parent f12dc020

kernel/cgroup.c

+2 −1
Original line number Diff line number Diff line
@@ -4052,6 +4052,7 @@ static struct cftype files[] = { 
	},

	{

		.name = "notify_on_release",

		.flags = CFTYPE_INSANE,

		.read_u64 = cgroup_read_notify_on_release,

		.write_u64 = cgroup_write_notify_on_release,

	},
@@ -4073,7 +4074,7 @@ static struct cftype files[] = { 
	},

	{

		.name = "release_agent",

		.flags = CFTYPE_ONLY_ON_ROOT,

		.flags = CFTYPE_INSANE | CFTYPE_ONLY_ON_ROOT,

		.read_seq_string = cgroup_release_agent_show,

		.write_string = cgroup_release_agent_write,

		.max_write_len = PATH_MAX,